The Molecular Adsorber Coating (MAC) is a sprayable coatings technology that was developed at NASA Goddard Space Flight Center (GSFC). The coating is comprised of highly porous, zeolite materials that help capture outgassed molecular contaminants on spaceflight applications. The adsorptive capabilities of the coating can alleviate molecular contamination concerns on or near sensitive surfaces and instruments within a spacecraft. This paper will discuss the preliminary testing of NASA’s MAC technology for use on future missions to Mars. The study involves evaluating the coating’s molecular adsorption properties in simulated test conditions, which include the vacuum environment of space and the Martian atmosphere. MAC adsorption testing was performed using a commonly used plasticizer called dioctyl phthalate (DOP) as the test contaminant.

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Nithin S. Abraham and Doris E. Jallice, "Preliminary testing of NASA’s Molecular Adsorber Coating technology for future missions to Mars," Proc. SPIE 10748, Systems Contamination: Prediction, Control, and Performance 2018, 107480E (Presented at SPIE Optical Engineering + Applications: August 20, 2018; Published: 19 September 2018); https://doi.org/10.1117/12.2320400.